fix some test console errors

The react testing library prints errors to the console about not using
act(). This adds fixes/workarounds for most cases.

src/settings/Settings.test.tsx

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: MIT
 // Copyright (c) 2022-2023 The Pybricks Authors
 
+import { AbstractPureComponent2 } from '@blueprintjs/core';
 import { act, cleanup, getByLabelText, waitFor } from '@testing-library/react';
 import React from 'react';
 import { testRender } from '../../test';
@@ -8,6 +9,18 @@ import { firmwareInstallPybricks } from '../firmware/actions';
 import { firmwareRestoreOfficialDialogShow } from '../firmware/restoreOfficialDialog/actions';
 import Settings from './Settings';
 
+beforeEach(() => {
+    // this avoids react testing lib errors about not using act() by running
+    // callbacks immediately instead of deferring
+    jest.spyOn(
+        AbstractPureComponent2.prototype,
+        'requestAnimationFrame',
+    ).mockImplementation((callback) => {
+        callback();
+        return () => undefined;
+    });
+});
+
 afterEach(() => {
     cleanup();
     jest.resetAllMocks();